Drilling apparatus



Filed Dec. 27, 1926 3 Sheets-Sheet l fzzueniar:

{y ddbizamen- Feb. 24,. 1931. c, JQHANSEN 1,794,114

' DRILLING APPARATUS Filed Dec. 27, 1926 5 Sheets-Sheet 2 i 5 =4 MAM,

Feb. 24, 1931.

H. c: JOHANSEN DRILLING APPARATUS Filed Dec.- 27', 1926 3 Sheets-Sheet 3 V II:- III Patented Feb. .24, 1931 C. JOHANSEN, OF I'JIICHZGAN CITY, XNDIANA, ASSIG-NOR SULLIVAN MA- OHINER-Y CQIi IP- it A CGRLORA'IION OF IVIASSACHUSETTS nnrzitrne APPARATUS Application filed December 27, 1926. Serial No. 157,248.

This invention relates to drilling apparatus and more particularly, but not exclusively. to drills of the rotary core type.

in object of this invention is to provide ii an improved drilling apparatus. Another object is to provide an proved core drill having improved and simplified driving connecti for the drill rod rotation means, improved compact driving connections for the hoisting drum and iinprovec drill rod 5 other objects and advantages of the invention Wlll, however, subsequently more fully appear. 7

In the accompanying drawings there is shown for purposes of illustration two forms which the invention may assume in practice.

In these drawings,-

Fig. 1 is side elevational view of the im.

proved drill, parts being broken away to facilitate illustration,

2 is a fragmentary and elevational view of the drill shown in Fig.1. Fig. 3 is a central longitudinally extending vertical sectional view taken on line 3 3 of Fig. 1 and illustrating the improved rotation and feeding means for thedrill rod.

l is a transverse horizontal sectional on line 1'1 of Fig. 3.

Fig. 5 is a transverse horizontal sectional view taken on line 55 ofl ig.

Fig. 6 is an enlarged central longitudinally eXt-endi vertical sectional view taken on line 6 {i of 2 and illustrating the drivmg motor and drivm connections for the hoisting drum and the rotation and feeding 'lIlBELIlS. V r

Fig. 7 is a detail sectional view illustrating the drill rod chuck.

Fig. 8 is a view similar to that shown in Fig. 1 and illustrating a modified form of the invention.

In the illustr tive construction shown in Figs. 1 to 7 there is shown a core-drilling apparatus generally comprising a fabricated frame or base 1 mounted on skids 2 and supporting a supplemental base frame 3' on which is carried the feeding and rotation mechanism 1, the hoisting drum 5, and the electric driving motor 6.

'Referring particularly to Figs. 1 and 6 it will be observed that the base 3 has projecting upwardly therefrom standards 7 and 8, the latter of which has a cylindrical recess or bore 9 which receives a cylindrical casing 10 of the electric motor 6. The motor casing projects inwardly from the standard 8 and has journaled thereon the hoisting drum 5. The drum 5 has a radial flange member 11, the inner periphery of which is recessed to receive an annular bearing sleeve 12 within which rollers 13 are mounted, the latter engaging a bearing sleeve 1% mounted on the periphery of the motor casing 10. As illustrated, an annular groove 15 formed in tl e periphery of the flange member 11 carlies a brake band 16 which can be applied or released by any suitable toggle lever mechanism, herein including a pivoted operating lever 17 (see Fig. 2). The end of the hoisting drum '5 remote from the motor carries a transverse head member 18 fixed thereto as by screws 19 and having an outwardly extending coaxial stub shaft 20 rotatably mounted within spaced alined ball bearings 21, the outer races of which are disposed within the hollow portion of a stub shaft 22 rotatably mounted within a bearing sleeve 23 carried by the supporting standard 7. The hollow shaft 22 has a radial flange 241 fixed to an annular flange 25 as by screws 26, sald flange 25 also having an annular groove 27 within which is mounted a brake band 28 adapted to be applied or released by any suitable toggle lever mechanism similar to that used in connection with the brake band'16. It will thus be seen that the drum loo 5 is rotatably supported at one end on the motor casing and at its other end within the standard 7 as by the shaft 20-and bearings 21 thereby providing an exceedingly compact arrangement. As shown, access to the outer end of the bearings 21 may be had by removing an end cover plate 29. The illustrative means for driving the drum 5 from the motor comprises a pinion 3O fixed to the armature shaft 31 and which meshes with a spur gear 32 suitably journaled upon the head member 18. The gear 32 has rotatable therewith and driven thereby a spur pinion 33 which meshes with a spur gear 34: fixed to a shaft 35 journaled in spaced alined ball bearings 36 carried by the head member 18. Alsoiixed to the shaft 35 and disposed intermediate the bearings 36 is a spur pinion 37 which meshes with a spur gear 38 likewise suitably journaled on the head member 18. The spur gear 38 meshes with an internal reaction gear 39 formed on the member 2 1. It will be evident that when the brake band 28 is applied the internal gear 39 is held against rotation and consequently the drum 5 is driven from the motor through driving gearing including the gear elements 30, 32, 33, 34, 37, and 38, the latter rolling around the stationary internal reaction gear 39 during drum rotation. It will also be evident that when the brake band 28 is released, the internal gear 39 is free to rotate and consequently the drum 5 remains idle. Shoul it be desired for any reason to brake rotation of the drum 5, the brake band 16 may be applied.

The improved drill rod rotation and feed means as shown in the drawings specifically comprises a spur pinion 4&0 suitably fixed to the armature shaft 31 of the mot r at the end thereof opposite from the pinion 30 and this pinion 4O meshes with a larger spur gear 41 suitably secured to a horizontal shaft 42 disposed below and parallel with the motor shaft and journaled at the end thereof adjacent the gear 41 in ball'bearings 43 carried by the base 3. The gear" 40 and 4:1 and the adjacent end of the motor are enclosed by a detachable cover plate 44' suitably securer to the standard 8 and the base frame 3. The other end of the shaft 42, as shown in Fig. 1, is journaled in ball bearings ar carried by a hinge plate 45 suitably rigidly secured to the base frame 3 and this end of. the shaft 42 has lined thereto a bevel pinion 46 which drives the improved drill rod rotation and feeding mechanism; As

illustrated, pivotally mounted, as at 16 on the stationary hinge plate a5, is a thrust head generally designated 47 and which comprises plural-partcasing 48, the front part of the 'casing being detachable to permit access to v the internalmechanism. The casing .48 has pivotally mounted thereon, as at 49, a loclr- 111g bolt 50 winch 15 adapted to be swung into a slot 51 formed on the hinge plate 45. When the nut on the locking bolt 50 is tightened the thrust head is clamped tightly against the stationary hinge plate. Also the thrust head 18 is adapted to be swung outwardly into the dotted line position shown in Fig. for purto be hereinafter described. Again to the driving connections for the ed feeding and rotation mechanism it Je observed that the bevel pinion 16 'ith a larger bevel gear 52 (see here his drive sleeve or quill 5 L journaled in a bearing sleeve 55 suitably carried by the casing 48. Also secured to the sleeve 5 1 at the upper end thereof are coaxial spur gears 56 and 57 which mesh with spur gears 58 and 59 respectively rotatably mounted on a sleeve 60, the latter being slidably and 'rotatably mounted within a bearing sleeve member 61 suitably carried by the thrust head casing. As sh wn, the sleeve has formed thereon laterally projecting clutch teeth 62 which, when slid longitudinally, are adapted to engage clutch aws 63 and 64 formed in the spur 5S and 59, respectively, to alternatively connect the latter to the sleeve 60 for rotation therewith. Formed in the gears 58 and 59 between the clutch jaws 63 and 64 is a recess 65 adapted to receive the clutch teeth 62 and when thelatter are within this recess the clutch is neut a1 and neither of the gears 58 and 59 is connected to the sleeve 60. Consequcntly the sleeve 60 remains idle at that time. Carried on the sleeve 60 at the lower end thereof at 66 is a feed shifter handle 67 sleeve 60 being adapted to rotate relative to the handle and thrust washers 68 are pre vided. between the handle and the sleeve. The clutch teeth 62 and the sleeve 60 are adapted to be held in different adjusted positions by means of a locking pin 69, carried by the handle 67 and engageable with locking apertures 70 formed in the casing 48. As shown, slidably mounted within the sleeve 60 and splined thereto for rotation therewith is a transmission shaft or rod 71 having fixed thereto, at 72, a cone clutch element 73 of a friction safety device and this clutch element is adapted to engage a conical clutch surface 7 1 formed within a spur gear 75, the latter being rotatably mounted on the transmission shaft 71. The conical surface 74 on the gear 7 5 is yieldably maintained in frictional contact with the clutch member 73 eyed, as at 53, to the lower end of a by means of a coiled spring 76 encircling the rod 71 and acting between a reaction .plate 77 carried by the lower end of the rod and a sleeve 78 slidably mounted within a sleeve 79 carried by the thrusthead frame. The tension of the spring 76 is adjustable by means ofnuts threaded on the lower end of the rod This friction cone clutch is adapted to' slip upon overload of the drill rod, for instance in case anything goes wrong with the cutting bit. It will be understood that the pairs of gears 56, 58 and 57, 59 are designed respectively to cause rotation of the transmission shaft 71 at different speeds with respect to the drive sleeve 54,-the set of gears 57, 59 having a different ratio of teeth from the set of gears 56, 58. Furthermore, meshing with the spur gear 75 is a spur gear having a sleeve portion 81 rotatably mounted in a bearing sleeve 82 suitably carried by the frame As shown, the sleeve is herein in the form of a feed nut and is provided with internal threads 83 which engage threads 84 formed on the feed screw 85. This feed nut or sleeve 81 forces the feed screw 85 down-v wardly during drilling. Herein formed integral with the feed nut 81 is a radial flange 86 engaging the upper race of a ball thrust bearing 87, while engaging the lower race of this hearing is a thrust washer 88 threadedly connected to the lower end of the feed nut. The flange 86 and the washer 88 and the interposed thrust bearing take the load of the drill rods and the pressure when feeding. The ball thrust bearing 87 is carried within a detacha le cap member 89 suitably secured to the lower end of the swivel head frame 48. The driving sleeve or quill 54 carries a key 90 which cooperates with the keyway 91 formed in and extending longitudinally of the feed screw 85. It will herein be noted that when the operator manipulates the feed shi ter handle 67 to connect the gear 58 to the sleeve for rotation herewith, the feed nut 81 is rotated at one speed, while if the gear 58 is disconnected and the gear 59 connected to the sleeve the feed nut 81 is rotated at a different speed. The gearing is so pro portioned that when the gear 52 is rotated, the feed nut or sleeve 81 is rotated at a differential speed with respect to he feed screw, thereby causing the feed screw as it is rotated to be fed longitudinally with respect to the thrust head and at a speed controlled by the adjustment of the variable or selective gearing 58, 59. When the clutch teeth 62 are shifted into their neutral position the feed nut 81 remains stationary and upon rotation of the quill 54 the feed screw is consequently fed rearwardly at a high speed. The feed screw 85 is hollow and extending coaxially therethrough is adrill stem or rod 92 which carries at its upper end a usual water swivel and lifting bail 93, while the lower end thereof is adapted to be connected in a well known manner to the rod line which carries the usual core barrel and cutting bit. Suitably secured to the lower end of the feed screw 85 is a drill rod chuck 94 comprising a casing 95 thread edly connected, as at 96, to the feed screw. Slidably mounted within the housing 95 are radially located chuck jaws 97 having formed thereon on their inner surfacesclutch teeth 98. Threadedly connected tothe casing 95 are radially located set screws 99 which encausing the latter to rotate and move longitudinally with thefeed screw 85.

in the form of the invention shown in Fig. 8 the construction 1s substantially. ldentical to that described above with the exception that the motor for driving the hoisting drum and the drill rod feeding and rotating mechanism is of the fluid actuated intermeshing rotor Turbinair type and comprising a cylindrical casing 100- disposed within the cylindrical bore of the. standard 8 and disposed within this casing are intermeshing spirally toothed rotors 101 of well known form. As shown, the rotors are arranged on parallel axes and one of the rotor shafts 102 has secured thereto. a pinion 103 which meshes with an intermediate gear 1 0 4 journaled on a shaft 105 carriedby the detachable cover plate 44. The gear 104 meshes with a spur gear 106 fixed to the horizontal transmission shaft 42 heretofore described. This motor is adapted to be actuated by either compressed air or steam in a well known manner. Otherwise this form of the invention is the same as that described above in the preferred form.

The operation of the drilling apparatus is as follows: The usual hoisting cable is extended from the hoisting drum 5 upwardly around the usual pulley blocks carried by the derrick and the drop line of this cable carries a usual hook which is connected to thelifting bail 93 on the upper end of the drill rod 92. The rod 92 isthen lowered through the hollow feed screw 85 and is connected in a well known manner to the upper end of the rod line which carries the cutting bit. The operator then adjusts the set screw 99 of the chuck 94 and the drill stem 92 is connected to the feed screw for rotation and longitudinal movement therewith. The motor 6 is then started and the drill steel is consequently rotated through the gears 40, 41, shaft 42, bevel pinion 46, bevel gear52, driving sleeve '54 which is splined to the feed screw. The

operator then'manipulates the" feed shifter lever 67 connecting one or the other of the gears 58,59 in driving relation with the transmission rod 71 and'cons equently the feed nut is rotated and the feed screw and drill red are fed downwardly at the desired speed. When it is desired to takea core the lower end of the drill stem 92 is disconnected from the rod line,the locking bolt 50 is released," and the thrust head swung outwardly about its hoisting drum is rotated and the rod line is raised from the drill hole. The rod line is lowered in the hole in a similar manner. It is obvious that when formations of different hardness are encountered the drill stem may be rotated at different speeds and that when the feeding and rotation mechanism become overloaded the safety clutch 73, 74 is adapted to slip, thereby preventing breaka e of any of the feeding and rotation parts. IVhen desired the feed screw is fed rearwardly at a high speed. It is also obvious that when it is desired to hold the rod line suspended by the hoisting cable the brake band 16 be applied to prevent rotation of the drum.

As a result of this invention it will be noted that an improved drilling apparatus is provided having an improved compact arrangement of the driving motor and hoisting drum and improved and simplified driving connections for the drill rod rotating and feeding mechanisms. It will further be noted that a variable speed feeding mechanism is provided which is exceedingly flexible in its operation, yieldable means being provided to permit the driving connections to slip if for any reason the drill rod becomes overloaded. It will further be noted that an improved core drill is provided having an derstood that these forms of the same are shown for purposes of illustration and that the invention may be modified and embodied in various other forms without de parting from its spirit or the scope of the appended claims. 1

What I claim as new and desire to secure by Letters Patent is: j

1. In a drilling apparatus, a base, a horizontal motor thereon, drill rod hoisting mechanism including a hoisting drum rotatably supported on said base, drill rod rotating and feeding'mechanism on said base at one end of said motor, said drum being arranged immediately adjacent said feeding and rotating mechanism and bodily between said feeding and rotating mechanism and the remote end of said motor, driving connections between one end of said motor and said hoisting drum, and driving connections between the other end of said motor and said rotating and feeding mechanism.

' 2. In a drilling apparatus, a base, a horizontal motor thereon, a hoisting drum arranged coaXially with said motor, drill rod rotating and feeding mechanism on said base at one 7 end of said motor, said drum being arranged immediately adjacent said feeding and rotating mechanism and between said feeding and rotating mechanism and the remote end of said motor, driving connections between one end of said motor and said hoisting drum, and driving connections between the other end of said motor and said rotating and feeding mechanism.

3. In a drilling apparatus, a horizontal motor thereon having its axis extending longitudinally thereof, a hoisting drum arranged coaxially with said motor, drill rod feeding and rotating mechanism on said base at one end of said motor, said drum being arranged immediately adjacent said feeding and rotating mechanism and between said feeding and rotating mechanism and the remote end of said motor, driving connections between one end of said motor and said drum, and driving connections between the other end of said motor and said feeding and rotating mechanism.

a. In a drilling apparatus, a base, a motor thereon having a stationary casing secured to said base, a winding drum arranged coaxially with and surrounding said motor, drill rod rotating and feeding mechanism onsaid base, and driving connections between said motor and said hoisting drum and said drill rod rotating and feeding mechanism.

'5. In a drilling apparatus, a base, a motor thereon having a stationary cylindrical casing, a hoisting drum surrounding and rotatably mounted on said motor casing, drill rod rotating and feeding mechanism on said base, and driving connections between said motor and said hoisting drum and said rotating and feeding mechanism.

6. In a drilling apparatus, a base, a motor thereon having a stationary cylindrical casing, a hoisting drum coaxial with said motor and rotatably mounted on said casing, drill rod rotating and feeding mechanism on said base, driving connections between one end of said motor and said hoisting drum, and driving connections between the other end of said motor and said rotating and feeding mechanism.

7. In a drilling apparatus, a base, a horizontal motor thereon having its axis extending longitudinally thereof, said motor having a stationary casing, a hoisting drum surrounding and rotatably mounted on said casing, drill rod rotating and feeding mechanism on saidbase, and driving connections. between said motor and sand hoisting drum and said rotating and feeding mechanism.

8. In a drilling apparatus, a base, a horizontal motor thereon having its axis extending longitudinally thereof, said motorhaving and feeding mechanism on said base,

driving connections between one end of said motor and said hoisting drum, and driving connections between the other end of said motor and said rotating and feeding mechanism' 9. In a drilling apparatus, a base, a horizontal motor thereon having its axis extending longitudinally thereof, a hoisting drum, drill rod rotating and feeding mechanism on said base, driving connections between said motor and hoisting drum, and driving connections between said motor and said rotating and feeding mechanism, said latter connections including a transmission shaft ranged parallel with and below the motor axis and journaled on said base.

10. In a drilling apparatus, a base, a supplemental supporting frame thereon, a motor carried by said supplemental frame and having a stationary cylindrical casing, a hoisting drum surrounding and rotatably mounted on said motor casing, drill rod rotating and feeding mechanism carried by said supplemental frame, driving connections between said motor and drum, and driving connections between said motor and said rotating and feeding mechanism.

11. In a drilling apparatus, a base, asupplemental supporting frame thereon, a motor carried by said supplemental frame and having a stationary cylindrical casing, a hoist ing drum coaxial with said motor and rotat ably mounted on said motor casing, drill rod rotating and feeding mechanism carried by said supplemental frame, driving connections between one end of said motor and said hoisting drum, and driving connections between the other end of said motor and said rotating and feeding mechanism.

1 In a drilling apparatus, a base, a motor thereon having a stationary casing secured to said base, a hoisting drum arranged coaxially with and surrounding said motor, drill rod rotating mechanism on said base, driving connections between said motor and hoisting drum, and driving connections between said motor and said rotating mechanism.

13, In a drilling apparatus, a base, a horizontal motor thereon having its axis extend ing longitudinally thereof, a hoisting drum, drill rod rotating mechanism on said base at one end of said motor, said drum being arranged immediately adjacent said rotating mechanism and bodily between said rotating mechanism and the remote end of said motor,

driving connections between said motor and hoisting drum, and driving connections between said motor and said rota-ting mechanism.

14. In a drilling apparatus, a base, a hori- Zontal motor thereon having its axis extending longitudinally thereof, a hoisting drum, drill rod rotating mechanism on said base at one end of said motor, said .drum being arranged immediately adjacem said rotating mechanism and bodily between said rotating mechanism and the remote end of said motor, driving connections between one end of said motor and hoisting drum, and driving connections between the other end of said motor and said rotating mechanism. p

15. In a drillin apparatus, a base, a horizontal motor thereon having its axis extending longitudinally thereof, said motor having a stationary cylindrical casing, a hoisting drum surrounding and rotatably mounted on said casing, drill rod rotating mechanism on said base, driving connections be tween said motor and hoisting drum, and driving connections between said motor and said rotating mechanism.

16. In a drilling apparatus, a base, a horizontal motor thereon having its axis extending longitudinally thereof, said motor hava stationary cylindrical casing, a hoisting drum coaxial with said motor and rotatably mounted on said casing, drill rod rotating mechanism on said base, driving connections between one end of said motor and ioisting drum, and driving connections between the other end of said motor and said rotating mechanism.

17. In a drilling apparatus, a base, a hori- Zontal motor thereon, a hoisting drum, driving connections between said motor and drum including mechanism to permit running of said mot-or while said drum remains idle without disconnecting the drum from said motor, drill rod rotating and feeding mechanism on said base at one end of said motor, said drum being arranged immediately adjacent said feeding and rotating mechanism and bodily between said feeding and rotating mechanism and the remote end of said motor, and driving connections between said motor and said rotating and feeding mechanism.

18. In a drilling apparatus, a base, a horizontal motor thereon having its axis ex tending longitudinally thereof, a hoisting drum arranged coaxially with said motor, driving connections between said motor and hoisting drum including means to permit running of said motor while said drum remains stationary, drill rod rotating and feeding mechanism on said base, at one end of said motor, said drum being arranged immediately adjacent said feeding and rotating mechanism and between said feeding and rotating mechanism and the remote end of said motor and driving connections between said motor and said rotating and feeding mechanism.

19. In a drilling apparatus, a base, a hori zontal motor thereon, a hoisting drum, driving connections between one end of said motor and drum including mechanism to permit running of said motor while said drum remains idle, drill rod rotating and feeding mechanism on said base at one end of said motor, said drum being arranged immediately adjacent said feeding and rotating mecha nism bodily between the latter and the re mote end of said motor, and driving connections -etween the other end of said motor and said rotating feeding mechanism.

20. In a drilling apparatus, a base, a horizontal motor thereon having its aliis extending longitudinally thereof, a hoisting drum arranged coaxial; with and surrounding said motor, driving conne s between one end of said motor and hoi drum including means to permit running of sad motor while aid drum remains stationary, drill rod 1' ing and feeding mecha-i n on said a; d driving connections bet -i r end or said motor and said rotating and H r mK-banism.

lrilling apparatus, a base, a motor thereon a hoisting drum, driving connections between said motor and said drum includirg a frictionally control ed reaction r ada ited to be held stationary to or to be freely rotatable to permit running of said mot-or while said drum renn 'ns stationary, drill rod rotating and feeding mechanism on said base, the axes of said motor and drum being disposed in a plane perpendicular to the drill rod axis, and driving connections between said motor and said rotating and feeding mechanism.

22. In a drilling apparatus, a base, a motor thereon having a ho izontal power shaft, a hoisting drum, driving connections between one end of said motor and said drum including a frictionally controlled reaction member adapt-ed to be held stationary to effect driving or said drum or to be freely rotatable to permit running of said motor while said drum remains stationary, drill rod rotating and feeding mechanism on said base at one end of said motor, said drum being arranged immediately adjacent said feeding and rotating mechanism bodily between the latter and the remote end of saic motor, and d ving connections between the other end of said motor and said rotating and feeding mechanism.

In a drilling apparatus, a base, a horizontal motor thereon having a stationary casing secured to said base and arranged with its axis extending longitudinally of said base, a hoisting drum arranged coaxially rith and surrounding said motor, driving connections between said motor and hoisting drum including a frictionally controlled reaction member adapted to be held stationary to effect driving of said drum or to be fecly rotatable to permit running of said motor while said drum remains stationary, drill rod rotating and feeding mechanism on said base, and driving connections between saidmotor and said rotating and feeding mechanism.

24. In a drilling apparatus, a base, a horizontal motor thereon having its axis extendinglongitudinally thereof, a hoisting drum arranged coaxially with said motor, driving connectlons between one end of said motor and hoisting drum including a frictionally H controlled reaction member adapted to be held stationary to effect driving of said drum or to be freely rotatable to permit running of said motor while said drum remains stationary, drill rod rotating and feeding mechanism on said base, and driving connections between the other end or" said motor and said rotating and feeding mechanism.

25. In a drilling apparatus, a base, a motor thereon having a stationary cylindrical casing, a hoisting drum surrounding and rotatably mounted on said casing, driving connections between said motor and drum including a frictionally controlled reaction member adapted to be held stationary to effect driving of said drum or to be freely rotatable to permit running of said motor while said drum remains stationary, drill rod rotating and feeding mechanism on said base, and driving connections between said motor and said rotating and feeding mechanism.

26. In a drilling apparatus, a base, a motor thereon having a stationary cylindrical casing, a hoisting drum coaxial with said motor and rotatably mounted on said casing, driving connections between one end of said motor and drum including a frictionally controlled reaction member adapted to be held stationary to effect driving of said drum or to be freely rotatable to permit running of said motor while said drum remains stationary, drill rod rotating and feeding mechanism on said base, and driving connections between the other end of said motor and said rotating and feeding mechanism. 27; In a drilling apparatus, a base, a horizontal rotary motor thereon, a hoisting drum rotatably supported on said base on a horizontal axis extending longitudinally thereof, drill rod rotating and feeding mechanism on said base at one end of said motor, said drum being interposed bodily between the remote end of said motor and said rotating and feeding mechanism and disposed immediately adjacent the latter, driving connections between said motor and drum, and driving connections between said motor and said rotating and feeding mechanism.

28. In a drilling apparatus, a base, a horizontal rotary motor thereon, a hoisting drum rotatably supported on said base on a horizontal axis extending longitudinally thereof, drill rod rotating and feeding mechanism on said base atone end of said motor, said drum being interposed bodily between the remote end of said motor and said rotating and feeding mechanism and disposed immediately adjacent the latter, driving connections between one end of said motor and drum, and driving connections between the other end of said its iio

iis

motor and said rotating and feeding mechanism.

connections between the other end of said motor and said rotating and feeding mechanism.

30, In a drilling apparatus, a base frame, a horizontal rotary motor having its power shaft extending longitudinally of said frame, drill rod rotating and feeding mechanism disposed at the front end of said base frame adjacent to and in advance of said motor,

drill rod hoisting mechanism on said base frame including a hoisting drum arranged on a longitudinal axis immediately adjacent and in the rear of said rotating and feeding mechanism, driving connections between the end of said motor remote from said rotating and feeding mechanism and the latter, and driving connections between the other end of said motor adjacent said drum and said drum.

31. In a drilling apparatus, a base frame, a horizontal rotary motor thereon having its power shaft extending longitudinally of said base frame and having a cylindrical motor casing, drill rod rotating and feeding mechanism disposed at the front end of said base frame adjacent to and in advance of said motor, hoisting mechanism on said base frame including a hoisting drum arranged on a longitudinal axis coaxial with said motor and immediately adjacent and in the rear of said rotating and feeding mechanism, said hoisting drum being journaled on said cylindrical motor casing, driving connections between said motor and said hoisting drum, and driving connections between said motor and said drill rod rotating and feeding mechanism.

32. In a drilling apparatus, a base frame, a horizontal rotary motor on said frame having its power shaft extending longitudinally of said frame, drill rod rotating mechanism on said frame at one end of and adjacent to said motor, drill rod hoisting mechanism on said frame including a hoisting drum arranged coaXially with said motor and disposed immediately adjacent to and in the rear of said rotating mechanism and between said rotating mechanism and the remote end of said motor, driving connections between the adjacent end of said motor and said hoisting drum, and driving connections between the remote end of said motor and said rotating mechanism.

33. In a drilling apparatus, a base frame, a horizontal rotary motor on said frame having its power shaft extending longitudinally of said frame, drill rod rotation mechanism on said frame at one end of and adjacent to said motor, drill rod hoisting mechanism on said frame including a hoisting drum arranged coaxially with said motor and disposed immediately adjacent to and in the rear of said rotation mechanism and between said rotation mechanism and the remote end of said motor, driving connections between the adjacent end of said motor and said hoisting drum, and driving connections between the remote end of said motor and said rotation mechanism including a transmission shaft geared to said motor shaft and arranged parallel with said motor shaft beneath said motor and drum, and operative connections between said transmission shaft and said rotation mechanism.

. In testimony whereof I afiiX m signature.

HARRY C. JO ANSEN. 

